<!doctype html>
<html lang="zh-cn">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>404 Not Found</title>
    <link rel="stylesheet" href="/css/mdblog.css">
</head>
<body>
    <div id="app">
        <div class="sidebar">
            <?php include_once '_sidebar.php' ?>
        </div>
        <div id="main">
            <div class="w-full">
                <header class="top-header sticky border-bottom">
                    <div class="flex items-center ml-auto">asdf</div>
                </header>
                <main class="main">
